1 /*
2
3 Copyright (c) 2016 Martin Sustrik
4
5 Permission is hereby granted, free of charge, to any person obtaining a copy
6 of this software and associated documentation files (the "Software"),
7 to deal in the Software without restriction, including without limitation
8 the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 and/or sell copies of the Software, and to permit persons to whom
10 the Software is furnished to do so, subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be included
13 in all copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 IN THE SOFTWARE.
22
23 */
24
25 #include <assert.h>
26 #include <errno.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <unistd.h>
30
31 #include "../../libdill.h"
32
33 #define CONN_ESTABLISHED 1
34 #define CONN_SUCCEEDED 2
35 #define CONN_FAILED 3
36
statistics(int ch)37 coroutine void statistics(int ch) {
38 int active = 0;
39 int succeeded = 0;
40 int failed = 0;
41
42 while(1) {
43 int op;
44 int rc = chrecv(ch, &op, sizeof(op), -1);
45 if(rc < 0 && errno == ECANCELED) return;
46 assert(rc == 0);
47
48 switch(op) {
49 case CONN_ESTABLISHED:
50 ++active;
51 break;
52 case CONN_SUCCEEDED:
53 --active;
54 ++succeeded;
55 break;
56 case CONN_FAILED:
57 --active;
58 ++failed;
59 break;
60 }
61
62 printf("active: %-5d succeeded: %-5d failed: %-5d\n",
63 active, succeeded, failed);
64 }
65 }
66
dialogue(int s,int ch)67 coroutine void dialogue(int s, int ch) {
68 int op = CONN_ESTABLISHED;
69 int rc = chsend(ch, &op, sizeof(op), -1);
70 assert(rc == 0);
71 int64_t deadline = now() + 60000;
72 rc = msend(s, "What's your name?", 17, deadline);
73 if(rc != 0) goto cleanup;
74 char inbuf[256];
75 ssize_t sz = mrecv(s, inbuf, sizeof(inbuf), deadline);
76 if(sz < 0) goto cleanup;
77 inbuf[sz] = 0;
78 char outbuf[256];
79 rc = snprintf(outbuf, sizeof(outbuf), "Hello, %s!", inbuf);
80 rc = msend(s, outbuf, rc, deadline);
81 if(rc != 0) goto cleanup;
82 cleanup:
83 op = errno == 0 ? CONN_SUCCEEDED : CONN_FAILED;
84 rc = chsend(ch, &op, sizeof(op), -1);
85 assert(rc == 0 || errno == ECANCELED);
86 rc = hclose(s);
87 assert(rc == 0);
88 }
89
main(int argc,char * argv[])90 int main(int argc, char *argv[]) {
91
92 int port = 5555;
93 if(argc > 1)
94 port = atoi(argv[1]);
95
96 struct ipaddr addr;
97 int rc = ipaddr_local(&addr, NULL, port, 0);
98 assert(rc == 0);
99 int ls = tcp_listen(&addr, 10);
100 if(ls < 0) {
101 perror("Can't open listening socket");
102 return 1;
103 }
104
105 int ch[2];
106 rc = chmake(ch);
107 assert(rc == 0);
108 int cr = go(statistics(ch[0]));
109 assert(cr >= 0);
110
111 int b = bundle();
112 assert(b >= 0);
113
114 int i;
115 for(i = 0; i != 3; i++) {
116 int s = tcp_accept(ls, NULL, -1);
117 assert(s >= 0);
118 s = suffix_attach(s, "\r\n", 2);
119 assert(s >= 0);
120 rc = bundle_go(b, dialogue(s, ch[1]));
121 assert(rc == 0);
122 }
123
124 rc = bundle_wait(b, now() + 10000);
125 assert(rc == 0 || (rc < 0 && errno == ETIMEDOUT));
126
127 rc = hclose(b);
128 assert(rc == 0);
129 rc = hclose(cr);
130 assert(rc == 0);
131 rc = hclose(ch[0]);
132 assert(rc == 0);
133 rc = hclose(ch[1]);
134 assert(rc == 0);
135 rc = hclose(ls);
136 assert(rc == 0);
137
138 return 0;
139 }
140
141